Information processing apparatus, control method, and recording medium

ABSTRACT

An information processing apparatus instructs a plurality of print plug-ins having at least a printer search function to search for a printer and displays, if the plurality of print plug-ins are instructed to perform the search, a first screen which includes (1) a printer detected by search processing performed by the plurality of print plug-ins instructed to perform the search and includes (2) an object for shifting to a second screen but does not include (3) a link to a download page of a print plug-in that is not installed, and displays, in response to an instruction given to the object in the first screen, the second screen which includes (3) the link to the download page of the print plug-in that is not installed.

CROSS-REFERENCE TO RELATED APPLICATION

This application is a Continuation of U.S. application Ser. No.15/438,609, filed Feb. 21, 2017 which claims priority from JapanesePatent Application No. 2016-036298, filed Feb. 26, 2016, which arehereby incorporated by reference herein in their entireties.

BACKGROUND OF THE INVENTION Field of the Invention

The aspect of the embodiments relates to an information processingapparatus, control method, and recording medium.

Description of the Related Art

In recent years, a print function is increasingly supported as astandard function by an operating system (OS) for mobile terminals, suchas Android (registered trademark), which runs on a mobile terminalapparatus such as a smartphone. In Windows (registered trademark) andother operating systems which run on a personal computer, the printfunction is controlled by software called a printer driver. In Android,the print function is controlled by software referred to as a printplug-in in place of the printer driver.

Japanese Patent Application Laid-Open No. 2006-190320 discusses amanagement system in which if a driver of a printer selected by a useris not installed on a client, the driver is distributed to the clientand automatically installed onto the client.

The case where one printer is supported by a plurality of printerdrivers is not considered in Japanese Patent Application Laid-Open No.2006-190320.

SUMMARY OF THE INVENTION

According to an aspect of the embodiments, an information processingapparatus includes a search unit configured to instruct a plurality ofprint plug-ins having at least a printer search function to search for aprinter, and a display unit configured to display, if the plurality ofprint plug-ins are instructed to perform the search, a first screenwhich includes (1) a printer detected by search processing performed bythe plurality of print plug-ins instructed to perform the search andincludes (2) an object for shifting to a second screen but does notinclude (3) a link to a download page of a print plug-in that is notinstalled, and to display, in response to an instruction given to theobject in the first screen, the second screen which includes (3) thelink to the download page of the print plug-in that is not installed.

Further features of the disclosure will become apparent from thefollowing description of exemplary embodiments with reference to theattached drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 illustrates a network configuration according to an exemplaryembodiment of the disclosure.

FIG. 2 illustrates an example of a hardware configuration of a mobileterminal apparatus.

FIG. 3 illustrates an example of a configuration of software which runson a mobile terminal apparatus.

FIGS. 4A and 4B illustrate an example of a display screen of anapplication according to a first exemplary embodiment.

FIGS. 5A, 5B, and 5C illustrate an example of a display screen of anapplication according to the first exemplary embodiment.

FIG. 6 illustrates the operation performed after a target printerdisplay region is tapped.

FIG. 7 illustrates the operation performed after a target printerdisplay region is tapped.

FIGS. 8A and 8B illustrate an example of a display screen of anapplication according to the first exemplary embodiment.

FIGS. 9A, 9B, and 9C illustrate an example of a display screen of anapplication according to the first exemplary embodiment.

FIGS. 10A and 10B illustrate an example of a display screen of anapplication according to a second exemplary embodiment.

FIG. 11 illustrates the operation performed after a target printerdisplay region is tapped.

FIG. 12 illustrates the operation performed after a target printerdisplay region is tapped.

FIG. 13 illustrates an example of a print plug-in correspondence table.

DESCRIPTION OF THE EMBODIMENTS

A print plug-in includes a printer (image forming apparatus) searchfunction and a print function. The print plug-in presents to a user alist of printers detected by the search function in response to arequest from an application, and transmits a print job to a selectedprinter. The print plug-in is provided in the form of an Androidapplication and is provided from a printer vendor or application vendorto the user via an application distribution service such as Google Play(registered trademark).

To use the functions of the print plug-in, the user downloads andinstalls the print plug-in. On some mobile terminal apparatuses, theprint plug-in is pre-installed to enable the user to use the printfunction without downloading and installing the print plug-in. On theother hand, the pre-installation of the print plug-in increases anamount of the storage used in the mobile terminal apparatus regardlessof whether the user uses the print function.

The present specification discusses a method in which if one printer issupported by a plurality of print plug-ins, a selection candidate isdisplayed for each of the plurality of print plug-ins. In this method,even when a print plug-in is already installed, if there is a printplug-in that is not installed, the print plug-in that is not installedis also displayed as a selection candidate on a selection screen.Specifically, although printing in a printer is possible by an installedprint plug-in, if there is another print plug-in that supports theprinter and is not installed, a guide to cause a user to install anotherprint plug-in is shown. This causes disturbance to the user anddecreases operability.

The aspect of the embodiments is directed to providing an informationprocessing apparatus showing improved operability in selecting and usingan image forming apparatus.

Various exemplary embodiments of the disclosure will be described belowwith reference to the accompanying drawings.

FIG. 1 illustrates a network configuration according to a firstexemplary embodiment of the disclosure.

A mobile terminal apparatus 2000 is an information processing apparatusand is connected via an access point 2013 to a network to which printers1000, 1001, and 1002 are connected. As illustrated in FIG. 1, each ofthe printers 1000, 1001, and 1002 stores a model name and InternetProtocol (IP) address therein. While the printers are described as anexample of an image processing apparatus in the present exemplaryembodiment, the image processing apparatus is not limited to theprinters. The image processing apparatus can be any other device whichincludes the print function, such as a multifunction peripheral (MFP).

FIG. 2 illustrates an example of the hardware configuration of themobile terminal apparatus 2000.

A flash memory (Flash) 2003 stores various programs. A system-on-a-chip(SoC) 2001 executes a program as hardware, and the program stored on theflash memory 2003 performs control as software. The program is loadedinto a random access memory (RAM) 2002, and the SoC 2001 interprets andexecutes the program.

A Bluetooth (registered trademark) unit 2004 performs Bluetooth(registered trademark) communication. A Wi-Fi unit 2005 performswireless communication via the access point 2013. A near-fieldcommunication (NFC) unit 2006 performs near-field wirelesscommunication. A power source 2007 supplies power to each component inthe mobile terminal apparatus 2000. A voice/audio unit 2008 includes amicrophone and speaker and is used to input and output voice/audio. Atouch panel 2009 is an operation input unit that a user operates withhis/her fingers. A light emitting diode (LED) unit 2010 is used forvarious displays.

A camera unit 2011 includes an image capturing unit configured tocapture still images and moving images. A sensor unit 2012 includesGlobal Positioning System (GPS), acceleration sensor, geomagneticsensor, and proximity sensor. The above-described components areconnected to the SoC 2001, and the mobile terminal apparatus 2000 isconnectable to the network via the access point 2013. While an operatingsystem (OS) in the present exemplary embodiment is an Android OS(registered trademark) of Google (registered trademark) Inc., the OS isnot limited to the Android OS.

FIG. 3 illustrates an example of a configuration of software which runson the mobile terminal apparatus 2000.

Software programs in the present exemplary embodiment are stored on theflash memory 2003. Applications 112 to 114 are installed on the mobileterminal apparatus 2000 and provide a function to display contents suchas images, documents, and web pages, and also a function to print, via aprinting system 100.

The printing system 100 includes a user interface (UI) unit 101, a printplug-in control unit 102, a communication unit 103, a print plug-inmanagement unit 104, a detection result reception unit 105, and aprinter search unit 106. The UI unit 101 provides a UI of the printingsystem 100. The print plug-in control unit 102 controls the operation ofa print plug-in (plug-in module) which is installed on the mobileterminal apparatus 2000. The communication unit 103 performs networkcommunication with a printer using Wi-Fi.

The print plug-in management unit 104 manages information about a printplug-in which is installed on the mobile terminal apparatus 2000. Thedetection result reception unit 105 receives a notification of adetection result when the print plug-in detects a printer on thenetwork. The printer search unit 106 is a printer search function whichis pre-installed on the mobile terminal apparatus 2000, and searches fora printer on the network in response to a request from an application.

A print plug-in 200 includes a printer search function, a print jobgeneration function, and a printer status acquisition function, andinterfaces the printing system 100 with a printer (target printer)supported by the print plug-in 200. The print plug-in 200 can beinstalled and uninstalled as needed, and the print plug-in managementunit 104 of the printing system 100 manages the installation state ofeach print plug-in. The print plug-in 200 includes a printer search unit201, a printing processing unit 202, a package name 203, and a vendorname 204. To simplify the description, the print plug-in 200 which ispre-installed in the present exemplary embodiment is, but not limitedto, a print plug-in that complies with standards supported by printersprovided by a plurality of vendors.

A printer search unit 201 searches for a printer on the network usingmulticasting or broadcasting. A protocol such as Service LocationProtocol (SLP) or Multicast Domain Name System (DNS) is used in thesearch. The protocol is not limited to SLP and DNS, and differentprotocols may be used for each print plug-in.

The printing processing unit 202 performs rendering processing on pagedescription language (PDL) data or image data which is printable by thetarget printer. The package name 203 is a name which is assigned to theprint plug-in 200 and by which the print plug-in 200 can uniquely beidentified. In this example, the package name 203 is“com.stdprintpluguin.xxx”. Different package names are assigned to eachprint plug-in, and each print plug-in stores the assigned package namein the package name 203. The vendor name 204 is the name of the vendorthat provides the print plug-in 200. In this example, the vendor name204 is “stdprintplugin”.

A print plug-in correspondence table 150 is a table which containsinformation about a list of printers detected on the network by theprinter search unit 106 and a list of print plug-ins corresponding tothe detected printers.

FIG. 13 illustrates an example of the print plug-in correspondence table150.

The print plug-in correspondence table 150 associates and stores thefollowing information. Specifically, a vendor name 1101 acquired from aprinter on the network by the printer search unit 106, a package name1102 of a print plug-in, and a download site (universal resource locator(URL) information) 1103 of the print plug-in are associated and stored.

A printer detected on the network can be connected to a print plug-in byreferring to the print plug-in correspondence table 150. If the printplug-in is not installed, it is possible to guide the user to a downloadsite of the print plug-in. For example, table data 1104 indicates that aprinter with the vendor name “ABC” corresponds to a print plug-in withthe package name “jp.co.abc.xxxxx”. Further, the table data 1104 alsoindicates that the printer with the vendor name “ABC” corresponds to theprint plug-in of a download site URL “http:store.abc.printplugin”.

FIGS. 4A, 4B, 5A, 5B, and 5C illustrate an example of a display screenof an application which implements the functions of the printing system100.

FIG. 4A illustrates an application screen 400 which displays thecontents of a print target. If a user taps a print button 401, the UIunit 101 of the printing system 100 is called to shift to the screenillustrated in FIG. 4B.

FIG. 4B illustrates a print setting screen 402. The print setting screen402 includes a target printer display region 403, a print setting region404, and a print button 405. If a user sets desired printing settings onthe print setting region 404 and then taps the print button 405,contents data of the application is output to a printer displayed in thetarget printer display region 403.

In FIG. 4B, the printer “Printer-C” with the IP address “192.168.0.12”is selected. In the present exemplary embodiment, a case will bedescribed in which an output destination is changed to a differentprinter. In the case of changing the output destination to the differentprinter, if the user taps the target printer display region 403, thescreen is changed to a screen illustrated in FIG. 5A. FIG. 5Aillustrates a printer list screen 406 which displays a list of printerson the network. The contents displayed on the printer list screen 406are controlled by the print plug-in control unit 102 and the UI unit101. The following describes a process of controlling the display on theprinter list screen 406.

FIGS. 6 and 7 are flow charts illustrating an example of the operationwhich the printing system 100 performs after the target printer displayregion 403 is tapped on the print setting screen 402 illustrated in FIG.4B.

A program recorded on the flash memory 2003 is loaded into the RAM 2002and executed by the SoC 2001 to realize the processes illustrated inFIGS. 6 and 7.

If the target printer display region 403 is tapped on the print settingscreen 402, then in step S501, the print plug-in control unit 102acquires via the print plug-in management unit 104 a list of printplug-ins installed on the mobile terminal apparatus 2000. In step S502,the print plug-in control unit 102 determines whether there is a printplug-in 200 installed via the print plug-in management unit 104.

In step S502, if the print plug-in control unit 102 determines thatthere is an installed print plug-in 200 (YES in step S502), theprocessing proceeds to step S503. In step S503, the print plug-incontrol unit 102 acquires an enablement setting list which indicateswhether the installed print plug-in is enabled or disabled. Settingsrelating to the print plug-in display control including an enablementsetting are set on an enablement setting screen.

FIGS. 8A and 8B illustrate an example of the enablement setting screen.

The enablement setting screen is managed by the print plug-in managementunit 104. On the enablement setting screen, a display setting of a printplug-in that is not installed and an enablement setting of an installedprint plug-in can be made.

In the present exemplary embodiment, whether to enable or disable aninstalled print plug-in can be selected for each installed print plug-inin an enablement setting 606, as illustrated in FIG. 8A. In the exampleillustrated in FIG. 8A, “STD Print Plugin” is enabled. Only when thesetting is enabled, the print plug-in control unit 102 instructs theprint plug-in to search for a printer in step S505 described below.

In step S503, the print plug-in control unit 102 acquires the enablementsetting list of the installed print plug-in illustrated in FIG. 8A, andthe processing proceeds to step S504. In step S504, based on theenablement setting of the first installed print plug-in which isacquired in step S503, the print plug-in control unit 102 determineswhether the installed print plug-in is enabled or disabled.

In step S504, if the print plug-in control unit 102 determines that theinstalled print plug-in is enabled (YES in step S504), the processingproceeds to step S505. In step S505, the print plug-in control unit 102gives the installed print plug-in an instruction to search for a targetprinter. On the other hand, in step S504, if the print plug-in controlunit 102 determines that the installed print plug-in is not enabled (NOin step S504), no search for a target printer is performed, and theprocessing proceeds to step S506.

In step S506, the print plug-in control unit 102 determines whether theprint plug-in having undergone steps S504 and S505 is the last installedprint plug-in on the enablement setting list acquired in step S503. Instep S506, if the print plug-in control unit 102 determines that theprint plug-in having undergone steps S504 and S505 is not the lastinstalled print plug-in on the enablement setting list (NO in stepS506), the processing returns to step S504. Then, steps S504 to S506 arerepeated on the next installed print plug-in on the enablement settinglist. On the other hand, in step S506, if the print plug-in control unit102 determines that the print plug-in having undergone steps S504 andS505 is the last installed print plug-in on the enablement setting list(YES in step S506), the processing proceeds to step S507.

In step S507, the print plug-in control unit 102 gives a searchinstruction to the printer search unit 106 of the printing system 100.In step S508, the print plug-in control unit 102 determines whethertimeout has occurred. In step S508, if the print plug-in control unit102 determines that the timeout has not occurred (NO in step S508), theprocessing proceeds to step S509. In step S509, the detection resultreception unit 105 of the printing system 100 receives a detectionresult of the search processing executed in step S505 and in step S507.

In step S510, the print plug-in control unit 102 determines anotification source of the detection result received in step S509. Ifthe print plug-in control unit 102 determines that the detection resultis received from the printer search unit 201 of the print plug-in 200which is given the instruction in step S505 (YES in step S510), theprocessing proceeds to step S511. On the other hand, if the printplug-in control unit 102 determines that the detection result isreceived from the printer search unit 106 of the printing system 100which is given the instruction in step S507 (NO in step S510), theprocessing proceeds to step S512 in FIG. 7.

In step S511, the UI unit 101 of the printing system 100 updates theprinter list screen 406 as illustrated in FIG. 5A based on theinformation of the detection result received from the print plug-in 200.Specifically, information about a printer supported by the installedprint plug-in 200 is added as indicated by printer information 407 onthe printer list screen 406. Then, the processing returns to step S508,and steps S508 to S511 are repeated until the timeout occurs.

On the other hand, in step S512, the print plug-in control unit 102refers to the print plug-in correspondence table 150 and acquiresinformation about the print plug-in corresponding to the printerincluded in the detection result received in step S509. At this time,the print plug-in control unit 102 acquires the information about theprint plug-in corresponding to the vendor name of the printer detectedby the printer search unit 106 based on the information about the vendorname acquired from the detected printer.

Further, if the detection result received in step S509 is a response setby standards such as Mopria (registered trademark), the print plug-incontrol unit 102 determines that the printer corresponds to a standardprint plug-in. If the printer corresponds to both the standard printplug-in and the print plug-in (vendor plug-in) provided by the vendor,information about the plurality of print plug-ins (information list) isacquired in step S512.

In step S513, the print plug-in management unit 104 determines whetherthe first print plug-in in the print plug-in information list acquiredin step S512 is already installed. If the print plug-in management unit104 determines that the first print plug-in is already installed (YES instep S513), the processing proceeds to step S519. On the other hand, ifthe print plug-in management unit 104 determines that the first printplug-in is not installed (NO in step S513), the processing proceeds tostep S514.

In step S514, the print plug-in control unit 102 determines whether alink to a download site of the print plug-in corresponding to the printplug-in information acquired in step S512 is generated on the printerlist screen 406. If the print plug-in control unit 102 determines thatno link to the download site is generated (NO in step S514), then instep S515, the print plug-in management unit 104 acquires the displaysetting of the print plug-in. The display setting of the print plug-inis set on the enablement setting screen described above with referenceto FIGS. 8A and 8B.

In the present exemplary embodiment, as illustrated in FIG. 8A, whethera print plug-in that is not installed is to be displayed on the printerlist screen 406 can be determined via a display setting 601 for eachprint plug-in that is not installed. In other words, for each printplug-in that is not installed, whether to display a guide to cause theuser to install the print plug-in (whether to generate a link to thedownload site) is selectable. In the example illustrated in FIG. 8A,“ABC Plugin” which is a print plug-in that is not installed is set to bedisplayed on the printer list screen 406 via a display setting 602.

Further, FIG. 8B illustrates another example of the enablement settingscreen for making the display setting according to the present exemplaryembodiment. In FIG. 8A, whether to display a print plug-in can be setfor each print plug-in that is not installed. On the other hand, in FIG.8B, whether to display a standard print plug-in on the printer listscreen can be set via a display setting 604, and whether to display avendor-provided print plug-in(s) other than the standard print plug-inon the printer list screen can be set via a display setting 605.

In other words, in FIG. 8B, whether to display the vendor plug-ins canbe set not for each vendor plug-in but by a single operation. In thisway, for example, in a case where a plurality of vendor-provided printplug-ins is not installed while a standard print plug-in is installed,all the vendor plug-ins can be set to be not displayed, by a simpleoperation. In addition, in FIG. 8B, for example, in the case where thestandard print plug-in is installed, the display setting 604 may begrayed out.

As described above, by using the setting screen as illustrated in FIG.8A or 8B, the user can designate a condition for displaying a guide tocause the user to install the print plug-in on a printer selectionscreen. While the condition for displaying or not displaying the guideis set using the setting screen in the present exemplary embodiment, theembodiment is not limited thereto. For example, instead of prompting theuser to set the condition, the printing system can set a condition. Forexample, if a printer is available for printing because a print plug-inis already installed, no guide to cause the user to install anotherprint plug-in corresponding to the printer is displayed. This case willbe described below in a second exemplary embodiment.

However, in the present exemplary embodiment, as illustrated in FIGS. 8Aand 8B, the method is used in which the user makes the setting as towhen to display or not to display a print plug-in or the guide. In thisway, the user can add a print plug-in with ease. For example, a Mopriaprinter can in general make print using a print plug-in provided by aprinter vendor in addition to a print plug-in provided by Mopria(hereinafter, “Mopria plug-in”). Mopria is a standard that enableprinting from a mobile terminal apparatus to various printers providedby various vendors.

In a case where only a standard print plug-in such as the Mopria plug-inis installed, printing is possible in a printer which supports thestandard, but the standard print plug-in supports in many cases onlysome functions that are common to printers. Thus, a specific function ofthe printer cannot be used.

A user who desires to use the specific function of the printer mightconsider installing the print plug-in which is provided by the printervendor and supports various functions after the Mopria plug-in enablesthe printer to make prints. In such a case, if no guide to cause theuser to install the print plug-in is displayed, the user cannot add theprint plug-in with ease. This impairs the user convenience.

As in the present exemplary embodiment, the inclusion of the settingmethod illustrated in FIG. 8A or 8B enables the user to add a printplug-in with ease. The following describes a case in which the displaysettings of print plug-ins that are not installed are individually seton the screen illustrated in FIG. 8A.

In step S516, the print plug-in control unit 102 determines whether theprint plug-in is to be displayed, based on the display setting acquiredin step S515. In step S516, if the print plug-in control unit 102determines that the print plug-in is to be displayed (YES in step S516),the processing proceeds to step S517. On the other hand, if the printplug-in control unit 102 determines that the print plug-in is not to bedisplayed (NO in step S516), steps S517 and S518 are skipped, and theprocessing proceeds to step S519.

In step S517, the UI unit 101 displays a guide on the printer listscreen 406 to cause the user to install the print plug-in. In thepresent exemplary embodiment, as illustrated in FIG. 5A, the link to thedownload site of the print plug-in is added as the guide to cause theuser to install the print plug-in on the printer list screen 406.

FIG. 5A illustrates a case in which the display settings acquired instep S515 are made to display all the print plug-ins that are notinstalled (all the display settings in FIG. 8A are set to “ON”).Further, FIG. 5B illustrates a case in which the display settingsacquired in step S515 are made not to display any print plug-ins thatare not installed (all the display settings in FIG. 8A are set to“OFF”). Specifically, no link to the download sites of the printplug-ins that are not installed is displayed on the printer list screen406.

Further, FIG. 5C illustrates a case in which the display settingsacquired in step S515 are made to display only “ABC Plugin” (in FIG. 8A,only the display setting of “ABC Plugin” is set to “ON”, and the displaysettings of the other print plug-ins are set to “OFF”). When FIGS. 5Aand 5C are compared, it can be seen that no link to the download site of“EFG Plugin” is displayed on the printer list screen 406 in FIG. 5C. Instep S518, the UI unit 101 displays “(1)” next to the name of the printplug-in displayed in the display region of printer information 408 instep S517, as the number of printers corresponding to the print plug-in.

On the other hand, in step S514, if the print plug-in control unit 102determines that the link to the download site is generated (YES in stepS514), the processing proceeds to step S520. In step S520, the UI unit101 increases by one the number of printers corresponding to the printplug-in that is displayed in the display region of the printerinformation 408 on the printer list screen 406, and updates the display.In step S519, the print plug-in control unit 102 determines whether theprint plug-in having undergone steps S513 to S518 and S520 is the lastprint plug-in on the information list acquired in step S512.

In step S519, if the print plug-in control unit 102 determines that theprint plug-in having undergone steps S513 to S518 and S520 is not thelast print plug-in on the information list (NO in step S519), theprocessing returns to step S513. Then, steps S513 to S518 and S520 arerepeated on the next print plug-in of the information list. On the otherhand, in step S519, if the print plug-in control unit 102 determinesthat the print plug-in having undergone steps S513 to S518 and S520 isthe last print plug-in of the information list (YES in step S519), theprocessing returns to step S508. Then, in step S508, the print plug-incontrol unit 102 determines whether timeout has occurred. If the printplug-in control unit 102 determines that the timeout has occurred (YESin step S508), the processes illustrated in FIGS. 6 and 7 are ended.

FIGS. 9A to 9C illustrate another example of the screen for setting thedisplay settings of print plug-ins that are not installed.

In this example, a UI for making the display settings is displayed inresponse to a swipe at the display region of the printer information 408on the printer list screen 406 in FIG. 9A. Specifically, the UI unit 101displays a setting region 701 as illustrated in FIG. 9B. The settingregion 701 is a UI via which the display settings of print plug-ins thatare not installed can be changed. In the setting region 701, whether todisplay a print plug-in is selectable for each print plug-in.

For example, if the display setting of “ABC Plugin” is changed to “OFF”in the setting region 701, the screen is changed to a screen illustratedin FIG. 9C, and “ABC Plugin” which is set not to be displayed is notdisplayed in the printer list screen 406. While the example in which thesetting region 701 is displayed in response to a swipe operation on theprinter information 408 is described in the present exemplaryembodiment, the operation is not limited to the swipe operation, and thesetting region 701 can be displayed in response to a different operationsuch as a flick operation.

As described above, according to the present exemplary embodiment, inthe case where a plurality of print plug-ins corresponds to one printerand one or more of the print plug-ins are already installed, whether todisplay the guide to cause the user to install another print plug-in canbe set. Specifically, the user is not prompted to install another printplug-in for a printer which is ready for printing. Thus, the operabilityis improved. Further, when the user desires to use another print plug-infor the printer that is ready for printing, the user can add the otherprint plug-in with ease. Thus, the convenience is not impaired.

The following describes a second exemplary embodiment. In the firstexemplary embodiment, the contents to be displayed on the printer listscreen 406 are controlled according to the display/non-display settingsmade by a user on the enablement setting screen (FIGS. 8A and 8B). Inthe present exemplary embodiment, the method will be described in whichwhether to display on the printer list screen 406 a print plug-in thatis not installed is controlled without prompting the user to make thesettings. The network configuration and the hardware and softwareconfigurations of the mobile terminal apparatus 2000 according to thepresent exemplary embodiment are similar to those according to the firstexemplary embodiment. Thus, in the following description, componentsthat are similar to those according to the first exemplary embodimentare given the same reference numerals, and description thereof isomitted.

FIGS. 10A and 10B illustrate an example of a display screen of anapplication on which the functions of the printing system 100 accordingto the present exemplary embodiment are installed. Further, FIGS. 11 and12 are flow charts illustrating an example of the operation of theprinting system 100 which is performed after the target printer displayregion 403 is tapped on the print setting screen 402 illustrated in FIG.4B.

The processes illustrated in FIGS. 11 and 12 correspond to the processesillustrated in FIGS. 6 and 7 according to the first exemplaryembodiment. Steps similar to the above-described steps are given thesame reference numerals, and description thereof is omitted. The programrecorded on the flash memory 2003 is loaded into the RAM 2002 andexecuted by the SoC 2001 to realize the processes illustrated in FIGS.11 and 12.

In step S901 in FIG. 12, the print plug-in control unit 102 determineswhether any one of the print plug-in(s) included in the information listacquired in step S512 is installed. In step S901, if the print plug-incontrol unit 102 determines that none of the print plug-in(s) includedin the information list is installed (NO in step S901), the processingproceeds to step S902. In step S902, the print plug-in control unit 102determines whether the print plug-in(s) included in the information listthat is not installed is displayed on the printer list screen 406.

In step S902, if the print plug-in control unit 102 determines that theprint plug-in(s) that is not installed is displayed (YES in step S902),the processing returns to step S508, and step S508 and the subsequentsteps are repeated on the next printer until the timeout occurs. On theother hand, in step S902, if the print plug-in control unit 102determines that the print plug-in(s) that is not installed is notdisplayed (NO in step S902), the processing proceeds to step S903. Instep S903, the UI unit 101 displays on the printer list screen 406 theprint plug-in(s) that is not installed. Specifically, a link to thedownload site of the print plug-in(s) is generated on the printer listscreen 406.

In step S902, if there is a plurality of print plug-ins that is notinstalled, then in step S903, at least one of the print plug-ins thatare not installed can be displayed, but the embodiment is not limitedthereto. For example, in step S903, all the print plug-ins that are notinstalled may be displayed.

On the other hand, in step S901, if the print plug-in control unit 102determines that one or more of the print plug-ins included in theinformation list are installed (YES in step S901), the processingproceeds to step S904. In step S904, the print plug-in management unit104 determines whether any of the print plug-in(s) included in theinformation list acquired in step S512 is not installed.

In step S904, if the print plug-in management unit 104 determines thatthe information list acquired in step S512 does not include any printplug-in that is not installed (NO in step S904), the processing returnsto step S508, and step S508 and the subsequent steps are repeated on thenext printer until the timeout occurs. On the other hand, in step S904,if the print plug-in management unit 104 determines that one or more ofthe print plug-in(s) included in the information list acquired in stepS512 are not installed (YES in step S904), the processing proceeds tostep S905. In step S905, the UI unit 101 adds the relevant plug-in to alist (collective display list) that collectively displays the printplug-in(s) that is not installed.

FIG. 10A illustrates an example of the collective display. Thecollective display is a display that indicates that one or more of printplug-in(s) available for use in a printer corresponding to analready-installed print plug-in are not installed. In the exampleillustrated in FIG. 10A, the display “other print plug-ins are alsoavailable for use” is presented in a collective display region 801.

If the collective display region 801 is tapped, the screen is changed toa screen as illustrated in FIG. 10B, and the UI unit 101 displays aguide to cause the user to install the print plug-in that is notinstalled. Specifically, a link to the download site of the printplug-in that is not installed is displayed on the printer list screen406. The displayed print plug-in that is not installed is the printplug-in added to the collective display list in step S905.

In step S906, the UI unit 101 determines whether the collective displayis presented on the printer list screen 406 as illustrated in FIG. 10A.Specifically, in the case described in the present exemplary embodiment,whether the collective display region 801 is displayed is determined. Instep S906, if the UI unit 101 determines that the collective displayregion 801 is already displayed (YES in step S906), the processingreturns to step S508, and step S508 and the subsequent steps arerepeated until the timeout occurs.

On the other hand, if the UI unit 101 determines that the collectivedisplay region 801 is not displayed (NO in step S906), the processingproceeds to step S907. In step S907, the UI unit 101 presents thecollective display as illustrated in FIG. 10A. In this example, thescreen is updated such that the collective display region 801 isdisplayed on the printer list screen 406. Then, the processing returnsto step S508, and if it is determined that the timeout has occurred, theprocesses illustrated in FIGS. 11 and 12 are ended.

In the present exemplary embodiment, in the case where it is determinedin step S901 that one or more of the corresponding print plug-ins areinstalled, the other corresponding print plug-ins that are not installedare collectively displayed. The present exemplary embodiment is notlimited to the foregoing. For example, a print plug-in that is notinstalled can be not displayed.

OTHER EXEMPLARY EMBODIMENT

The above-described exemplary embodiments can also be realized bysupplying a program which realizes one or more functions of theabove-described exemplary embodiments to a system or apparatus via anetwork or storage medium and then causing one or more processors in acomputer of the system or apparatus to execute the program. Further, theabove-described exemplary embodiments can also be realized by a circuit(e.g., application specific integrated circuit (ASIC)) which realizesthe one or more functions.

While the disclosure has been described with reference to exemplaryembodiments, it is to be understood that the disclosure is not limitedto the disclosed exemplary embodiments, and various modifications andchanges can be made without departing from the spirit of the disclosure.

In an information processing apparatus according to an exemplaryembodiment of the disclosure, the operability can be improved inselecting and using an image forming apparatus.

OTHER EMBODIMENTS

Embodiment(s) of the disclosure can also be realized by a computer of asystem or apparatus that reads out and executes computer executableinstructions (e.g., one or more programs) recorded on a storage medium(which may also be referred to more fully as a ‘non-transitorycomputer-readable storage medium’) to perform the functions of one ormore of the above-described embodiment(s) and/or that includes one ormore circuits (e.g., application specific integrated circuit (ASIC)) forperforming the functions of one or more of the above-describedembodiment(s), and by a method performed by the computer of the systemor apparatus by, for example, reading out and executing the computerexecutable instructions from the storage medium to perform the functionsof one or more of the above-described embodiment(s) and/or controllingthe one or more circuits to perform the functions of one or more of theabove-described embodiment(s). The computer may comprise one or moreprocessors (e.g., central processing unit (CPU), micro processing unit(MPU)) and may include a network of separate computers or separateprocessors to read out and execute the computer executable instructions.The computer executable instructions may be provided to the computer,for example, from a network or the storage medium. The storage mediummay include, for example, one or more of a hard disk, a random-accessmemory (RAM), a read only memory (ROM), a storage of distributedcomputing systems, an optical disk (such as a compact disc (CD), digitalversatile disc (DVD), or Blu-ray Disc (BD)™), a flash memory device, amemory card, and the like.

While the disclosure has been described with reference to exemplaryembodiments, it is to be understood that the disclosure is not limitedto the disclosed exemplary embodiments. The scope of the followingclaims is to be accorded the broadest interpretation so as to encompassall such modifications and equivalent structures and functions.

What is claimed is:
 1. An information processing apparatus comprising:at least one memory that stores a set of instructions; and at least oneprocessor that executes the instructions, the instructions, whenexecuted, causing the information processing apparatus to performoperations comprising: instructing an installed print plug-in includinga printer search function to search for a printer; displaying a firstscreen including information of printers detected by the instructedprint plug-in and a predetermined object for displaying a second screen;and displaying, based on receiving an instruction from a user forselecting the predetermined object, the second screen includinginformation of print plug-ins that have not been installed, wherein theprint plug-ins include printer search functions.
 2. The informationprocessing apparatus according to claim 1, further comprising: the atleast one memory storing information indicating whether each of aplurality of print plug-ins is in an enabled state or a disabled state,wherein each of the plurality of print plug-ins in the enabled state isinstructed to search for a printer.
 3. The information processingapparatus according to claim 1, wherein the operations includeinstructing to search for a printer.
 4. The information processingapparatus according to claim 1, wherein in a case where a plurality ofprint plug-ins on a network has not been installed, the information onthe second screen includes at least a plurality of display items eachfor displaying a download site of a corresponding one of the pluralityof print plug-ins that have not been installed.
 5. The informationprocessing apparatus according to claim 1, wherein each of the printplug-ins has a printer function to search for a printer.
 6. The methodfor an information processing apparatus according to claim 1, whereinthe first screen does not include vendor names of the print plug-insthat have not been installed.
 7. The information processing apparatusaccording to claim 1, wherein the information of the print plug-ins thathave not been installed includes vendor names of the print plug-ins thathave not been installed.
 8. The information processing apparatusaccording to claim 1, wherein the information of the print plug-ins thathave not been installed includes vendor names of printers thatcorrespond to the print plug-ins that have not been installed.
 9. Theinformation processing apparatus according to claim 1, wherein the firstscreen does not include the information of the print plug-ins that havenot been installed.
 10. The information processing apparatus accordingto claim 1, wherein the first screen is displayed in a case where theinstructed print plug-in has detected the printers.
 11. The informationprocessing apparatus according to claim 1, wherein the second screen isdisplayed in a case where the print plug-ins have been identified asprint plug-ins that are corresponding to printers on a network and thathave not been installed.
 12. The information processing apparatusaccording to claim 6, wherein the information of the print plug-ins thathave not been installed includes vendor names of the print plug-ins thathave not been installed.
 13. A method for an information processingapparatus comprising: instructing an installed print plug-in including aprinter search function to search for a printer; displaying a firstscreen including information of printers detected by the instructedprint plug-in and a predetermined object for displaying a second screen;and displaying, based on receiving an instruction from a user forselecting the predetermined object, the second screen includinginformation of print plug-ins that have not been installed, wherein theprint plug-in include printer search functions.
 14. The method accordingto claim 13, further comprising: storing information indicating whethereach of a plurality of print plug-ins is in an enabled state or adisabled state, wherein each of the plurality of print plug-ins in theenabled state is instructed to search for a printer.
 15. The methodaccording to claim 13, further comprising instructing to search for aprinter.
 16. The method according to claim 13, wherein in a case where aplurality of print plug-ins on a network has not been installed, theinformation on the second screen includes at least a plurality ofdisplay items each for displaying a download site of a corresponding oneof the plurality of print plug-ins that have not been installed.
 17. Themethod according to claim 13, wherein each of the print plug-ins has aprinter function to search for a printer.
 18. The method according toclaim 13, wherein the information of the print plug-ins that have notbeen installed includes vendor names of the print plug-ins that have notbeen installed.
 19. The method according to claim 13, wherein theinformation of the print plug-ins that have not been installed includesvendor names of printers that correspond to the print plug-ins that havenot been installed.
 20. The method according to claim 13, wherein thefirst screen does not include the information of the print plug-ins thathave not been installed.
 21. The method according to claim 13, whereinthe first screen does not include vendor names of the print plug-insthat have not been installed.
 22. The method according to claim 21,wherein the information of the print plug-ins that have not beeninstalled includes vendor names of the print plug-ins that have not beeninstalled.
 23. The method according to claim 13, wherein the firstscreen is displayed in a case where the instructed print plug-in hasdetected the printers.
 24. The method according to claim 13, wherein thesecond screen is displayed in a case where the print plug-ins have beenidentified as print plug-ins that are corresponding to printers on anetwork and that have not been installed.
 25. A non-transitory computerreadable storage medium storing a computer-executable program ofinstructions for causing a computer to perform a method for aninformation processing apparatus, the method comprising: instructing aninstalled print plug-in including a printer search function to searchfor a printer; displaying a first screen including information ofprinters detected by the instructed print plug-in and a predeterminedobject for displaying a second screen; and displaying, based onreceiving an instruction from a user for selecting the predeterminedobject, the second screen including information of print plug-ins thathave not been installed, wherein the print plug-in include printersearch functions.
 26. The non-transitory computer readable storagemedium according to claim 25, further comprising: storing informationindicating whether each of a plurality of print plug-ins is in anenabled state or a disabled state, wherein each of the plurality ofprint plug-ins in the enabled state is instructed to search for aprinter.
 27. The non-transitory computer readable storage mediumaccording to claim 25, further comprising instructing to search for aprinter.
 28. The non-transitory computer readable storage mediumaccording to claim 25, wherein in a case where a plurality of printplug-ins on a network has not been installed, the information on thesecond screen includes at least a plurality of display items each fordisplaying a download site of a corresponding one of the plurality ofprint plug-ins that have not been installed.
 29. An informationprocessing apparatus comprising: a control unit including a processorand a memory, the control unit configured to: cause a display unit todisplay a list of printers detected by an installed print plug-in with apredetermined object, and cause the display unit to display, based onselection of the displayed predetermined object by a user, informationof print plug-ins that have not been installed, wherein the printplug-ins have functions to search for printers.
 30. The informationprocessing apparatus according to claim 29, wherein the control unitcauses the display unit to display, based on reception of an instructionto display a list of printers from the user, the list of the printersand the predetermined object.
 31. The information processing apparatusaccording to claim 29, wherein the predetermined object is apredetermined button.
 32. The information processing apparatus accordingto claim 29, wherein the control unit causes the display unit to displaythe information of the print plug-in that have not been installed, anderase the predetermined object from the display unit, based on theselection of the displayed predetermined object by the user.
 33. Theinformation processing apparatus according to claim 29, wherein, on ascreen of the display unit where both the list of printers and thepredetermined object are displayed, the information of the printplug-ins that have not been installed is not displayed.
 34. Theinformation processing apparatus according to claim 29, wherein thecontrol unit acquires, from printers on a network, informationindicating vendors of the printers, wherein the control unit identifiesprint plug-ins that have not been installed, from among print plug-inscorresponding to the acquired information indicating the vendors, andwherein the information of the print plug-ins that have not beeninstalled displayed on the display unit are the vendors of theidentified print plug-ins.
 35. The information processing apparatusaccording to claim 34, wherein the information indicating the vendors isacquired by using a print system function of the information processingapparatus.
 36. The information processing apparatus according to claim29, wherein each of the print plug-ins is software having a function ofsearching for a printer and generating a print job.
 37. The informationprocessing apparatus according to claim 29, wherein the control unitaccesses, based on a predetermined operation being performed by the userin a state where the information of the print plug-ins that have notbeen installed is displayed, a download site for one of the printplug-ins that have not been installed.
 38. The information processingapparatus according to claim 29, wherein the control unit causes thedisplay unit to display, based on a predetermined operation beingperformed by the user in a state where the information of the printplug-in that has not been installed is displayed, a page for downloadingone of the print plug-ins that have not been installed.
 39. Theinformation processing apparatus according to claim 29, wherein theinstalled print plug-in is the print plug-in that has been installed tothe information processing apparatus, and the print plug-ins that havenot been installed are the print plug-ins that have not been installedto the information processing apparatus.
 40. The information processingapparatus according to claim 29, further comprising the display unit.41. The information processing apparatus according to claim 29, whereinthe information of the print plug-ins that have not been installedincludes vendor names of the print plug-ins that have not beeninstalled.
 42. The information processing apparatus according to claim29, wherein the information of the print plug-ins that have not beeninstalled includes vendor names of printers that correspond to the printplug-ins that have not been installed.
 43. The information processingapparatus according to claim 29, wherein the display unit is caused todisplay a screen that includes the list of printers, but does notinclude the information of the print plug-ins that have not beeninstalled.
 44. The information processing apparatus according to claim29, wherein of the display unit is caused to display the list ofprinters is a case where the instructed print plug-in has detected theprinters.
 45. The information processing apparatus according to claim29, wherein the display unit is caused to display the information in acase where the print plug-ins have been identified as print plug-insthat are corresponding to printers on a network and that have not beeninstalled.
 46. The information processing apparatus according to claim29, wherein each of the print plug-ins includes a printer searchfunction.
 47. The information processing apparatus according to claim29, wherein the list of printers and the predetermined object aredisplayed on a first screen that does not include vendor names of theprint plug-ins that have not been installed.
 48. The informationprocessing apparatus according to claim 47, wherein the information ofthe print plug-ins that have not been installed includes vendor names ofthe print plug-ins that have not been installed.
 49. An informationprocessing apparatus comprising: a control unit including a processorand a memory, the control unit configured to: cause a display unit todisplay a list of printers received from an installed print plug-in witha predetermined object, and cause the display unit to display, based onselection of the displayed predetermined object by a user, informationof print plug-ins that have not been installed, wherein the printplug-ins have functions of detecting printers.
 50. The informationprocessing apparatus according to claim 49, wherein the information ofthe print plug-ins that have not been installed includes vendor names ofthe print plug-ins that have not been installed.
 51. The informationprocessing apparatus according to claim 49, wherein the information ofthe print plug-ins that have not been installed includes vendor names ofprinters that correspond to the print plug-ins that have not beeninstalled.
 52. The information processing apparatus according to claim49, wherein the causing the display unit to display the list of printersdoes not include displaying the information of the print plug-ins thathave not been installed.
 53. The information processing apparatusaccording to claim 49, wherein the causing of the display unit todisplay the list of printers is in a case where the instructed printplug-in has detected the printers.
 54. The information processingapparatus according to claim 49, wherein the display unit is caused todisplay the information in a case where the print plug-ins have beenidentified as print plug-ins that are corresponding to printers on anetwork and that have not been installed.
 55. The information processingapparatus according to claim 49, wherein each of the print plug-insincludes a printer search function.
 56. A method for an informationprocessing apparatus comprising: displaying a list of printers detectedby an installed print plug-in with a predetermined object; anddisplaying, based on selection of the displayed predetermined object bya user, information of print plug-ins that have not been installed,wherein the print plug-ins have functions of detecting printers.
 57. Themethod according to claim 56, further comprising: displaying, based onreception of an instruction to display a list of printers from the user,the list of printers and the predetermined object.
 58. The methodaccording to claim 56, wherein the predetermined object is apredetermined button.
 59. The method according to claim 56, furthercomprising: displaying the information of the print plug-ins that havenot been installed; and erasing the predetermined object from a displayunit, based on the selection of the displayed predetermined object bythe user.
 60. The method according to claim 56, wherein, on a screen ofa display where both the list of the printers and the predeterminedobject are displayed, the information of the print plug-ins that havenot been installed are not displayed.
 61. The method according to claim56, further comprising: acquiring, from printers on a network,information indicating vendors of the printers; and identifying theprint plug-ins that have not been installed, from among print plug-inscorresponding to the acquired information indicating the vendors,wherein the information of the print plug-ins that have not beeninstalled displayed on the display unit is the vendors of the identifiedprint plug-ins.
 62. The method according to claim 61, wherein theinformation indicating the vendor is acquired by using a print systemfunction of the information processing apparatus.
 63. The methodaccording to claim 56, wherein each of the print plug-ins is softwarehaving a function of searching for a printer and generating a print job.64. The method according to claim 56, further comprising: accessing,based on a predetermined operation being performed by the user in astate where the information of the print plug-ins that have not beeninstalled is displayed, a download site of one of the print plug-insthat have not been installed.
 65. The method according to claim 56,further comprising: displaying, based on a predetermined operation beingperformed by the user in a state where the information of the printplug-ins that have not been installed is displayed, a page fordownloading one of the print plug-ins that have not been installed. 66.The method apparatus according to claim 56, wherein the installed printplug-in is the print plug-in that has been installed to the informationprocessing apparatus, and the print plug-ins that have not beeninstalled are the print plug-ins that have not been installed to theinformation processing apparatus.
 67. An information processingapparatus comprising: a control unit including a processor and a memory,the control unit configured to: cause a display unit to display a firstscreen including a list of printers detected by an installed printplug-in with a predetermined object, but not including vendor names ofprint plug-ins that have not been installed, and cause the display unitto display on a second screen, based on selection of the displayedpredetermined object by a user, the vendor names of the print plug-insthat have not been installed.
 68. The information processing apparatusaccording to claim 67, wherein the control unit causes the display unitto display, based on reception of an instruction to display a list ofprinters from the user, the list of printers and the predeterminedobject.
 69. The information processing apparatus according to claim 67,wherein the predetermined object is a predetermined button.
 70. Theinformation processing apparatus according to claim 67, wherein thecontrol unit causes the display unit to display the vendor names of theprint plug-ins that have not been installed, and erase the predeterminedobject from the display unit, based on selection of the displayedpredetermined object by the user.
 71. The information processingapparatus according to claim 67, wherein the control unit causes thedisplay unit to display, based on reception of an instruction to displaya list of printers from the user, the list of printers and thepredetermined object.
 72. The information processing apparatus accordingto claim 67, wherein the control unit acquires, from printers on anetwork, information indicating vendor names of the printers, whereinthe control unit identifies print plug-ins that have not been installed,from among print plug-ins corresponding to the acquired informationindicating the vendor names, and wherein the vendor names of the printplug-ins that have not been installed displayed on the display unit isthe vendor names of the printers on the network corresponding to theidentified print plug-ins.
 73. The information processing apparatusaccording to claim 72, wherein the information indicating the vendornames is acquired by using a print system function of the informationprocessing apparatus.
 74. The information processing apparatus accordingto claim 67, wherein each of the print plug-ins is software having afunction of searching for a printer and generating a print job.
 75. Theinformation processing apparatus according to claim 67, wherein thecontrol unit accesses, based on a predetermined operation beingperformed by the user in a state where the vendor names of the printplug-ins that have not been installed are displayed, a download site forone of the print plug-ins that have not been installed.
 76. Theinformation processing apparatus according to claim 67, wherein thecontrol unit causes the display unit to display, based on apredetermined operation being performed by the user in a state where thevendor names of the print plug-ins that have not been installed aredisplayed, a page for downloading one of the print plug-ins that havenot been installed.
 77. The information processing apparatus accordingto claim 67, wherein the installed print plug-in is to the print plug-inthat has been installed to the information processing apparatus, and theprint plug-ins that have not been installed are the print plug-ins thathave not been installed to the information processing apparatus.
 78. Theinformation processing apparatus according to claim 67, wherein thesecond screen is displayed in a case where the print plug-ins have beenidentified as print plug-ins that are corresponding to printers on anetwork and that have not been installed.
 79. The information processingapparatus according to claim 67, wherein each of the print plug-insincludes a printer search function.
 80. A method for an informationprocessing apparatus comprising: displaying a first screen including alist of printers detected by an installed print plug-in withpredetermined object, but not including vendor names of print plug-insthat have not been installed; and displaying a second screen, based onselection of the displayed predetermined object by a user, the vendornames of the print plug-ins that have not been installed.
 81. The methodaccording to claim 80, further comprising: displaying, based onreception of an instruction to display a list of printers from the user,the list of printers and the predetermined object.
 82. The methodaccording to claim 80, wherein the predetermined object is apredetermined button.
 83. The method according to claim 80, furthercomprising: displaying the vendor names of the print plug-ins that havenot been installed; and erasing the predetermined object from a displayunit, based on selection of the displayed predetermined object by theuser.
 84. The method according to claim 80, further comprising:displaying, based on reception of an instruction to display a list ofprinters from the user, the list of printers and the predeterminedobject.
 85. The method according to claim 80, further comprising:acquiring, from printers on a network, information indicating vendornames of the printers; and identifying print plug-ins that have not beeninstalled, from among print plug-ins corresponding to the acquiredinformation indicating the vendor names, wherein the vendor names of theprint plug-ins that have not been installed displayed on the displayunit is the vendor names of the printers on the network corresponding tothe identified print plug-ins.
 86. The method according to claim 85,wherein the information indicating the vendor names is acquired by usinga print system function of the information processing apparatus.
 87. Themethod according to claim 80, wherein each of the print plug-ins issoftware having a function of searching for a printer and generating aprint job.
 88. The method according to claim 80, further comprising:accessing, based on a predetermined operation being performed by theuser in a state where the vendor names of the print plug-ins that havenot been installed are displayed, a download site for one of the printplug-ins that have not been installed.
 89. The method according to claim80, further comprising: displaying, based on a predetermined operationbeing performed by the user in a state where the vendor names of theprint plug-ins that as have not been installed are displayed, a page fordownloading one of the print plug-ins that have not been installed. 90.The method apparatus according to claim 80, wherein the installed printplug-in is to the print plug-in that has been installed to theinformation processing apparatus, and the print plug-ins that have notbeen installed are the print plug-ins that have not been installed tothe information processing apparatus.